I've seen a detailed AI analysis. Ke played really well in the first half of the game, gradually building a comfortable lead. Then he made a big mistake at B127. Interestingly the report shows that Ke Jie is by far the most AI-like player among those participating the LG cup. At opening stage, 79% of his moves match what the AI would play (the 2nd best has only 68%).

A crude ctrl+F search using Go4go gives me this (barring any mistakes on my part),

Quote:

Ke Jie's last 450 gamesW+ 263 games (58,4%)

Park Junghwan's last 450 gamesW+ 231 games (51,3%)

Fan Tingyu's last 420 gamesW+ 224 games (53,3%)

Chinese Mingren's last 1000 gamesW+ 517 (51,7%)

Chinese Tianyuan's last 450 gamesW+ 247 (54,8%)

Chinese League 1's last 450 gamesW+ 249 (55,3%)

Since the games played by each player include many 6,5-komi games, I also looked at Chinese tournaments to have samples of 7,5-komi games only. I don't know how significant these numbers can be be from a statistical point of view but could it be that Ke Jie is significantly better with white (would be nice to have a stat for his 7,5-komi games only but I guess it could only be higher)?

Since the games played by each player include many 6,5-komi games, I also looked at Chinese tournaments to have samples of 7,5-komi games only. I don't know how significant these numbers can be be from a statistical point of view but could it be that Ke Jie is significantly better with white (would be nice to have a stat for his 7,5-komi games only but I guess it could only be higher)?

I have 176 games with Ke Jie as White and 3.75 komi. He won 138 (and 123 without counting).

As Black he played 185, winning 121.

I found his White performance so astonishing (78%) I had to re-check the figures, but I have seen a reference that he likes to play White. His performance as Black was 65%.

If you add in the 6.5 komi games from international events (tougher competition?) his White score drops to 65% for those games only (26 wins out of 40). With Ing komi his White score is 3-3.

Strangely, with 6.5 komi and Black against humans, it seems Ke Jie scored just 14/41 (34%).

Couldn't we use AI to determine the correct komi for white? I've always wondered about that.

You could certainly use AI to estimate the correct komi, and the stronger the AI, the better the estimate would be. They're not yet (and will probably never be) at the level where they could tell us definitively. The "correct" komi appears to be about in the range that humans have agreed upon, which is not surprising.

Couldn't we use AI to determine the correct komi for white? I've always wondered about that.

You could certainly use AI to estimate the correct komi, and the stronger the AI, the better the estimate would be. They're not yet (and will probably never be) at the level where they could tell us definitively. The "correct" komi appears to be about in the range that humans have agreed upon, which is not surprising.

I'm pretty sure this is untrue, or at least unimportant. It should be much more important that the two opponents are evenly matched. AIs have already shown us that they prefer White with 7.5 komi in Chinese rules, so that's something.

What would be interesting is seeing how AIs play with different komi, e.g. Golaxy since their developers stated that it could play with different values of komi.

Today Ke Jie slipped into 3rd on goratings after losing to Gu Zihao and Mi Yuting beating Fan Tingyu in the 15th round of the Chinese A League. Ke Jie, Mi Yuting, and Shin Jinseo are all within 5 points of each other, although this will probably fluctuate since Ke's past ratings are much higher than the latter two.

In Ke Jie's game against Gu Zihao, it seems that he got into a bit of trouble in the center. His center group was split in two, with one half eventually dying. However, after 192, my version of Leela Zero (#157, the last 15b network) seems to think there's still a bit of aji and a potential ko on the side after the D13 push for 193. Granted, the winning percentage was only in the 30s, but LZ didn't like the exchanges on the bottom. Would a stronger player care to shed some insight onto this? Was Ke Jie simply trying to play a tricky move because he saw the push didn't work, or was it really a misread?

Today Ke Jie further slipped into 4th position on goratings, only because he had a weaker opponent in yesterday's Chinese league. Mi Yuting is only 16 points behind No. 1 Park Junghwan after Park lost to Yi Lingtao. Yi Lingtao is a rising star that we should pay a lot of attention.

Great game between Ke Jie and Mi Yuting today in the Chinese league. Mi showed balls of steel to start a big approach ko which put some of his stones (which could have been safe) in jeopardy to avoid Ke's sente yose, but also put the status of Ke's even bigger corner in question and Mi had enough big threats to win by resign.

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